Finding the Fourth Proportional to 11,448,285.84, 15,781,991.40 and 7,999,819.92
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Solution
The fourth proportional to 11,448,285.84, 15,781,991.40 and 7,999,819.92 is: 11,028,121.67
Step by Step Solution
- Step 1: Write the proportion equation
11,448,285.84 : 15,781,991.40 = 7,999,819.92 : x - Step 2: Convert to fraction form
11,448,285.84/15,781,991.40 = 7,999,819.92/x - Step 3: Cross multiply
11,448,285.84x = 15,781,991.40 × 7,999,819.92 - Step 4: Simplify right side
11,448,285.84x = 126,253,089,178,988.69 - Step 5: Solve for x
x = 126,253,089,178,988.69/11,448,285.84 - Step 6: Final answer
x = 11,028,121.67
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.